maint: Switch to Guile-JSON 3.x.

Guile-JSON 3.x is incompatible with Guile-JSON 1.x, which we relied on
until now: it maps JSON dictionaries to alists (instead of hash tables),
and JSON arrays to vectors (instead of lists).  This commit is about
adjusting all the existing code to this new mapping.

* m4/guix.m4 (GUIX_CHECK_GUILE_JSON): New macro.
* configure.ac: Use it.
* doc/guix.texi (Requirements): Mention the Guile-JSON version.
* guix/git-download.scm (git-fetch)[guile-json]: Use GUILE-JSON-3.
* guix/import/cpan.scm (string->license): Expect vectors instead of
lists.
(module->dist-name): Use 'json-fetch' instead of 'json-fetch-alist'.
(cpan-fetch): Likewise.
* guix/import/crate.scm (crate-fetch): Likewise, and call 'vector->list'
for DEPS.
* guix/import/gem.scm (rubygems-fetch): Likewise.
* guix/import/json.scm (json-fetch-alist): Remove.
* guix/import/pypi.scm (pypi-fetch): Use 'json-fetch' instead of
'json-fetch-alist'.
(latest-source-release, latest-wheel-release): Call 'vector->list' on
RELEASES.
* guix/import/stackage.scm (stackage-lts-info-fetch): Use 'json-fetch'
instead of 'json-fetch-alist'.
(lts-package-version): Use 'vector->list'.
* guix/import/utils.scm (hash-table->alist): Remove.
(alist->package): Pass 'vector->list' on the inputs fields, and default
to the empty vector.
* guix/scripts/import/json.scm (guix-import-json): Remove call to
'hash-table->alist'.
* guix/swh.scm (define-json-reader): Expect pair? or null? instead of
hash-table?.
[extract-field]: Use 'assoc-ref' instead of 'hash-ref'.
(json->branches): Use 'map' instead of 'hash-map->list'.
(json->checksums): Likewise.
(json->directory-entries, origin-visits): Call 'vector->list' on the
result of 'json->scm'.
* tests/import-utils.scm ("alist->package with dependencies"): New test.
* gnu/installer.scm (build-compiled-file)[builder]: Use GUILE-JSON-3.
* gnu/installer.scm (installer-program)[installer-builder]: Likewise.
* gnu/installer/locale.scm (iso639->iso639-languages): Use 'assoc-ref'
instead of 'hash-ref', and pass vectors through 'vector->list'.
(iso3166->iso3166-territories): Likewise.
* gnu/system/vm.scm (system-docker-image)[build]: Use GUILE-JSON-3.
* guix/docker.scm (manifest, config): Adjust for Guile-JSON 3.
* guix/scripts/pack.scm (docker-image)[build]: Use GUILE-JSON-3.
* guix/import/github.scm (fetch-releases-or-tags): Update docstring.
(latest-released-version): Use 'assoc-ref' instead of 'hash-ref'.  Pass
the result of 'fetch-releases-or-tags' to 'vector->list'.
* guix/import/launchpad.scm (latest-released-version): Likewise.

1 files changed, 6 insertions, 19 deletions

diff --git a/guix/import/utils.scm b/guix/import/utils.scm
index 84503ab907..2a3b7341fb 100644
--- a/guix/import/utils.scm
+++ b/guix/import/utils.scm
@@ -45,7 +45,6 @@
   #:use-module (srfi srfi-41)
   #:export (factorize-uri
 
-            hash-table->alist
             flatten
             assoc-ref*
 
@@ -100,21 +99,6 @@ of the string VERSION is replaced by the symbol 'version."
                '()
                indices))))))
 
-(define (hash-table->alist table)
-  "Return an alist represenation of TABLE."
-  (map (match-lambda
-        ((key . (lst ...))
-         (cons key
-               (map (lambda (x)
-                      (if (hash-table? x)
-                          (hash-table->alist x)
-                          x))
-                    lst)))
-        ((key . (? hash-table? table))
-         (cons key (hash-table->alist table)))
-        (pair pair))
-       (hash-map->list cons table)))
-
 (define (flatten lst)
   "Return a list that recursively concatenates all sub-lists of LST."
   (fold-right
@@ -330,11 +314,14 @@ the expected fields of an <origin> object."
       (lookup-build-system-by-name
        (string->symbol (assoc-ref meta "build-system"))))
     (native-inputs
-     (specs->package-lists (or (assoc-ref meta "native-inputs") '())))
+     (specs->package-lists
+      (vector->list (or (assoc-ref meta "native-inputs") '#()))))
     (inputs
-     (specs->package-lists (or (assoc-ref meta "inputs") '())))
+     (specs->package-lists
+      (vector->list (or (assoc-ref meta "inputs") '#()))))
     (propagated-inputs
-     (specs->package-lists (or (assoc-ref meta "propagated-inputs") '())))
+     (specs->package-lists
+      (vector->list (or (assoc-ref meta "propagated-inputs") '#()))))
     (home-page
      (assoc-ref meta "home-page"))
     (synopsis